Related Experiment Video

Updated: Jul 2, 2025

Static Adhesion Assay for the Study of Integrin Activation in T Lymphocytes
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Static Adhesion Assay for the Study of Integrin Activation in T Lymphocytes

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ICAMs in Immunity, Intercellular Adhesion and Communication

Claudia Guerra-Espinosa1, María Jiménez-Fernández2,3, Francisco Sánchez-Madrid2,3,4

  • 1Immune System Development and Function Unit, Centro de Biología Molecular "Severo Ochoa", Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid, 28049 Madrid, Spain.

Cells
|February 23, 2024
PubMed

Insights

Cell adhesion molecules (CAMs), particularly intercellular (I)CAMs, play a crucial role in immune cell interactions and signaling. This review highlights ICAMs

Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Biology

Background:

  • Cell adhesion molecules (CAMs) are vital for leukocyte interactions and immune responses.
  • β2 integrins are key CAMs mediating leukocyte adhesion and migration.
  • Intercellular (I)CAMs are immunoglobulin superfamily receptors involved in cell adhesion.

Purpose of the Study:

  • To review evidence on the role of ICAMs in signal transduction.
  • To discuss the contribution of immune ICAMs (ICAM-1, -2, -3) to reciprocal cell signaling.
  • To highlight ICAMs' function in T cell activation, differentiation, and migration.

Main Methods:

  • Literature review of pioneering and recent studies.
  • Analysis of evidence supporting ICAMs' role in signal transduction.
  • Discussion of ICAMs' contribution to immune cell functions.

Main Results:

  • ICAMs are significantly involved in propagating intracellular signaling.
  • Immune ICAMs contribute to reciprocal cell signaling and function.
  • ICAMs play a critical role in T cell activation, differentiation, and migration.

Conclusions:

  • ICAMs are not merely partners but active participants in β2 integrin-mediated signaling.
  • Immune ICAMs significantly influence T cell functions, challenging the view of β2 integrins as solely leading these processes.
  • Further research into ICAMs' signaling roles is warranted for understanding immune responses.

Keywords:
ICAMsintercellular adhesionleukocytesmoesinβ2-integrins

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